PT-2015-6470 · Cisco · Cisco 9900

Published 2015-06-30 · Updated 2017-01-04 · CVE-2015-4226

Positive Technologies (AI Summary)

CVSS v2.0

7.1

High

Base vector

AV:N/AC:M/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Cisco 9900 phones version 9.3(2)

Description The issue is related to the packet-storing feature on Cisco 9900 phones, which does not properly support the RTP protocol. This allows remote attackers to cause a denial of service, resulting in a device hang, by sending malformed RTP packets after a call is answered.

Recommendations For Cisco 9900 phones version 9.3(2), consider updating the firmware to a version that properly supports the RTP protocol to prevent denial of service attacks. As a temporary workaround, restrict access to the RTP protocol on the affected phones to minimize the risk of exploitation.

Fix

Weakness Enumeration

CWE-399

Related Identifiers

CVE-2015-4226

Affected Products

Cisco 9900

References · 4

• http://tools.cisco.com/security/center/viewAlert.x?alertId=39554 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2015-4226 · Security Note
• http://securitytracker.com/id/1032748 · Note
• http://securityfocus.com/bid/75471 · Note